Hindi Sarhan, Hamid, and Amina Hamed Alobaidi. “The Role of Urinary 5- Hydroxyindoleacetic Acid Determination in Diagnosis of Acute Appendicitis”. Tikrit Journal of Pharmaceutical Sciences, vol. 9, no. 2, Apr. 2023, pp. 305-11, doi:10.25130/tjphs.2013.9.2.14.305.311.